Blair rocked the red carpet in a gorgeous flowing dress and a custom-made cane.

The NHS describes multiple sclerosis as "a condition that can affect the brain and/or spinal cord, causing a wide range of potential symptoms, including problems with vision, arm or leg movement, sensation or balance."

Image: Axelle/Bauer-Griffin/FilmMagic

Image: Gregg DeGuire/FilmMagic

On her own Instagram, where Blair has been very open about living with MS, she shared a photo taken at the Vanity Fair party with the caption "When my life flashes before my eyes, I want this portrait by @markseliger to be front and center."

Elsewhere on social media, people praised Blair for proudly walking with a cane, and in doing so shedding light on people living with MS and other disabilities.

The moment we will all be talking about tomorrow is the courageous #SelmaBlair, making her first appearance since announcing her MS diagnosis, at the VF Oscar party. She needs a cane to help walk, but she came to prove that no matter how tough this disease, she is a fighter. 🙌 pic.twitter.com/bCTo0hA59d

When Blair first announced that she had been diagnosed with MS in 2018, she wrote an emotional Instagram caption saying that despite her disability, she would continue to do her best in the hope of inspiring others.

"I am disabled. I fall sometimes. I drop things. My memory is foggy. And my left side is asking for directions from a broken gps," Blair wrote. "I am in the thick of it but I hope to give some hope to others."